Toilet brush



FIG. 1 is a front perspective view of a toilet brush which embodies the design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof; the left side view thereof being a mirror image of the right side view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The broken lines shown in the drawings represent unclaimed portions of the toilet brush and environment structure and form no part of the claimed design. 

The ornamental design for a toilet brush, as shown and described. 